Feed mechanism for metal-planers



(No Model.) W. GLBASON.

FEED MECHANISM FOR METAL PLANERS.

No. 514,594. Eatented Feb. 13, 1894.

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UNITED STATES PATENT OFFICE.

WILLIAM GLEASON, OF ROCHESTER, NEW YORK.

FEED MECHANISM FOR METAL-PLANERS.

SIPECIFICATION formingpart of Letters Patent No. 514,594, dated February13, 1894.

Application filedMay 1,1893. Serial No. 472,506. (No model.)

To 64% whom it may concern:

Be it known that I, WILLIAM GLEASON, of Rochester, in the county ofMonroe and State of New York, have invented a new and useful Improvementin Feed Mechanism for Metal-Planers, which improvement is fully setforth in the following specification and shown in the accompanyingdrawings.

This invention has for its object the producing of a better and morereliable means for operating the feed of metal planers and similarmachines than has heretofore been employed, the same being hereinafterfully described and more particularly pointed out in the claims.

Referring to the drawings Figure l is a side elevation of portions of ametal planer with my improved feed operating mechanism attached inplace. Fig. 2 is a transverse section on the dotted line 2 2 in Fig. 1and viewed as indicated by the arrow pointed thereon. Fig. 3 is in part,a diametrical section on the dotted line 3 3 in Fig. 1 and viewed asindicated by the arrow pointed on the line. Fig. 4 is a view seen asindicated by arrow 4 in Fig. 3. Fig. 5 is a front view seen as indicatedby arrow 5 in Fig. 3, the outer platebeing omitted. Fig.6 is a sectionon the dotted line 6 in Fig. 1 and viewed as indicated by arrow pointedon said line. Fig. 7 is a section on the dotted line 7 7 in Fig. 1 andviewed as indicated by thearrow pointed thereon. Fig. 8 is a frontelevation of the trip plate or trip, parts being transversely sectionedas on the dotted line 8 8 in Fig. 3, viewed as indicated by the arrowpointed on said line. The detail figures 3 to 8 inclusive are drawn toscales larger than that of the general figures l and 2.

Referring to the parts shown A, Figs. 1 and 2, is a part of the frame ofa planer, B a part of a post and C the bed, all being substantially ofcommon construction. D, Figs. 2 and 3, is the ordinary heavy cross shaftresting in bearings in the frame for driving the bed, commonly carryinga stout pinion connected byintermediate gearing with the rack on theunder side of the bed. A vertical box IE, Figs. 1 and 2, is secured to apost B, within which the ordinary feed rack, to, is adapted to slidevertically. The parts of the feed mechanism above the box E and operatedby the feed rack are such as are commonly used with machinesof thisclass and are not shown or here claimed to be new.

A trip, Z), Fig. 8, is secured rigidly to the flange 2, having its planeat right angles to the axis of the shaft. The fiangezis formed withopposing circular recesses in its sides and extending inward from itscircumference, and friction rings or bodies e 6, Figs. 3 and 5,preferably of leather or similar yielding substance, are placed in saidrecesses, which friction bodies project laterally beyond or overhang thefaces of the flange, as shown. The sole function of the part F with itsflange z is to carry these friction bodies; and said flange might be,save as to a matter of convenience in construction, made in one piecewith the shaft itself. The flange, being permanently and rigidly securedto the shaft is, for all practical purposes, a part thereof.

A circular plate G, is provided, formed with ahub G, having a journalbearing upon the part F, or (in case the flange 2 be a part of theshaft) upon the shaft itself. This plate is formed with a circularrecess in its face adjacent to the flange z in which to receive thelatter. A circular face plate or outer plate H, is held parallel withthe inner plate G and concentrically therewith, it being slightly lessin diameter than said inner plate, the latter being slightly chamberedto receive said outer plate, as shown in Fig. 8. The inner face of theplate H is formed with a circular chamber or recess opposite to, andcorresponding in diameter with, the recess in the inner plate which theflange occupies, which two recesses together form a circular chamberinclosing the flange with the friction bodies cc. The flange z is lessin thickness than the corresponding width of the chamber containing itso that thin circular cavities cl d, are formed on either side of saidflange next the respective plates G and H.

The outer plate H is secured to the inner plate G by means of bolts f,Figs. 1, 2, 3 and 4, more fully shown,however, in Fig. 6. These boltshave thin circular heads or flanges g, fitted within cylindricallongitudinal cavities h, formed in the face plate. The bolts passthrough the face plate and are threaded inthe plate G; and under thehead of each and within the cavity h, is placed a stout spiral spring'L.

From this description it will be understood that the bolts do not holdthe outer plate rigidly to the inner plate G, but that the former isurged toward the latter by the action of the compressed springs 2'. Theparts are constructed so that the plates are not brought in actualcontact by the yielding connections involving the springs, but are,rather, forced by said connections against the friction bodies 6 c. Whenthe plates are pressing the friction bodies for instance, there is stillleft between the plates a free space 7t, Figs. 3 and 6. By this meansthe friction bodies, when the parts are in their normal positions,receive the whole force of the combined action of the springs; thisbeing for the purpose of creating friction between the friction bodiesand the contiguous plates when the parts move upon each other. Theintensity of the pressure brought to bear upon the friction bodies, andthe amount of friction created between them and the contiguous metalsurfaces, may be regulated byturning the bolts f farther down againstthe springs or back to in part relieve the latter.

The trip Z), which is a single metal plate, is formed with circularrecessed ends, as shown in Fig. 8, there being two opposing shoulders orstops Z Z, at either end. The inner plate G is provided with twolongitudinal trip levers m m, Figs. 2, 3, at and 5, the outer or freeends of which being in position to encounter said shoulders when theplate is turned upon its axis. These trip levers rest in rectangularcavities 0, Figs. 5 and 7, formed in the inner plate and are held toplace by radial pins 19 p, rigid in said plate. These cavities are madeslightly widern1easured circumferentiallythan the heads of the levers soas to allow the latter to swing to a limited extent upon the pins p p inplanes parallel with each other and with the axis of the driving shaftD. The heads of these levers project across the space 713 between theplates, as shown in Fig. 7, to encounter the face plate H, the leversconstituting actuators for said plates. When in their normal positionsthese levers are parallel with the axis of the shaft D.

For the purpose of adjustments and to guard against wear, the face plateis provided with two finely threaded longitudinal barrels n n, Figs. 1,3 and 4, more fully shown in 7, one barrel being opposite the head ofeach lever. The barrels are in position to be encountered by theprojecting corners W of the heads of the levers when the latter areturned out of line or into oblique positions, as shown in Figs. 4 and 7,by encountering the stops Z Z of the trip Z). On account of this actionof the levers the plates G and H are pushed temporarily farther apart,as indicated by dotted lines in Fig. 7, each time the levers are swungout of line by the action of the trip. This pushing apart of the platesis done against the combined action of the springs L and it relieves thefriction between the bodies 6 e and the plates. To relieve this frictionthe plates need to be moved apart but a small fraction of an incliasone-sixty-fourth, for instancethis being easily effected by theactuating levers in the manner above described.

It is understood that the axial motions of the shaft D are reciprocal;that is to say, when the planer is running this shaft is turned, by theordinary means, first in one direction and then in the other toreciprocate the bed 0.

Now, the operation of the feed mechanism is as follows: When the platesG H press the friction bodies the former are caused to turn with theshaft on account of the friction between said plates and the frictionbodies. But when the plates, turning in either direction, cause thelevers to encounter the stops of the trip, the plates are forced apart,which relievcs the friction, and they at once stop turning, while theshaft continues its motion without them until its rotation in thatdirection ceases. And, again, when the shaft begins to rotate in theopposite direction the levers are carried away from the contiguousstops, wh ch again permits the plates to press the friction bodies andturn with the shaft until the levers encounter the opposite stops of thetrip. This occurring the friction is again relieved, as before, whichallows the plates to stop until the shaft once more reverses itsdirection of motion. These operations give an intermittent reciprocalmotion to the face plate 11 from which, by means of a connecting rod Iand associated parts common to this class of machines, the feed rack orrod to is intermittingly vertically reciprocated for the purpose offeeding the tool. The face plate is formed with the ordinarydianietrical T-sliaped slot .9, Figs. 1 and 3, in its exposed face, inwhich is held an ordinary traverse screw it, which may be operated by acrank 11.. A clamp 'I), and a nut for the screw, both of commonconstruction, are provided, the clamp being 0peratedbyahandlew.Bylooseningtheclamp the adjacent end of the rod I may be moved along theslot to regulate its distance from the center of axial motion of theface plate for the purpose of determining the extent of motions of thefeed rack a. The clamp holds the parts rigid with the face plate. Thebolts f are each formed with a shoulder as, Fig. 6, which prevents itbeing turned so far into the plate G as to set the spring. If thesprings become set at any time the trip levers could not press theplates apart and serious breakage would be liable to result fromstarting up the planer. The operating corners "r of the trip levers andthe opposing ends of the barrels are preferably hardened to prevent wearat these points. The barrels are formed with squared heads upon which touse a wrench for turning them for the purpose of adjusting themlongitudinally; and set nuts 3 are provided for the barrels to hold themin place. It will be observed that the action of the sprlngs serves tostart the plates at each t me the shaft D changes its direction ofmotion. That is to say, when the shaft starts to turn in eitherdirection the springs coact for a moment with the shaft to rotate theplates. This matter is essential, and the said action f the springs aidsin the successful operation of the feed mechanism. By observing Fig. 7itwill be seen that the inclined position of the trip lever is a strainedor abnormal position from the fact that the lever is pressing the faceplate back against the action of the springs; and the tendency of thelatter is to return the lever to its normal or truly longitudinalposition, in which both corners r r bear fairly against the end of thebarrel. This action of the springs causes the free end of the lever tobear hard against the contlguous shoulder of the trip plate, (see F1g.l,) and the reaction serves to turn the plates in the directionindicated by the arrow I), and this action will take place instantlyupon the shaft ceasing to act to hold the levers against the stops, thatis to say, the instant the shaft begins to turn in theoppositedirection. Bythis meansthesprings turn the plates each timeuntil the levers assume their normal positions and again permlt theplates to press the friction bodies, when the motion of the plates isassumed by the shaft and they are carried forward temporarily as before.

The longitudinal adjustments of the barrels It 72, above mentioned,determine the distance the plates are moved apart by the action of thelevers.

What I claim as my invention is 1. In a feed mechanism for metalplaners'a rotatory reciprocating shaft carrying friction bodies, incombination with plates one on either side of said friction bodiesadapted to press the latter between them, the plates being urged towardeach other and against the friction bodies by a yielding pressure, andactuators held in one plate in position to press the other plate,substantially as shown and described.

2. In a feed mechanism for metal planers a rotatory reciprocating shaftcarrying friction bodies, in combination with plates adapted to pressthe friction bodies between them said plates being pressed against thefriction bodies by a yielding pressure as that of springs, and actuatorsserving to release the plates from the friction bodies, and means toregulate the tensity of the action of the springs, substantially asshown and described.

3. In a feed mechanism for metal planers a rotatory reciprocating shaftcarrying friction bodies, in combination with plates one on either sideof said friction bodies pressed against the latter by a yieldingpressure, and levers havingbearings in one plate and adapted to pressagainst the other, and stops to control the levers, substantially as andfor the purpose specified.

4. A feed mechanism for metal planers, consisting of a rotatoryreciprocating shaft carrying friction bodies, in combination with platesadapted to press the friction bodies between them, and actuators in oneplate and adapted to press the other plate, the surfaces or parts of thelatter plate against which the actuators press being made adjustable, asand for the purpose specified.

5. A feed mechanism for metal planers, consisting of a rotatoryreciprocating shaft carrying friction bodies, in combination with platesadapted to press the friction bodies and turn with the shaft, andactuators for said plates serving to release them from the action of theshaft while the latter is turning, substantially as described.

6. A feed mechanism for metal planers, consisting of a rotatoryreciprocating shaft carrying friction bodies, in combination with platesadapted to press the friction bodies between them, and actuators servingto release the plates from the action of the shaft, and a feed rackconnected with said plates, substantially as shown and described.

7. In a feed mechanism for metal planers a rotatory reciprocating shaftcarrying friction bodies, in combination with an outer and an innerplate adapted to press the friction bodies between them, and actuatorsfor said plates serving to release them from the action of the shaft, afeed rack, and a connecting rod for the feed rack and the outer plate,and means to regulate or shift the hold of the connecting rod upon theplate, substantially as shown and described.

8. A feed mechanism for metal planers, consisting of a rotatoryreciprocating shaft carrying friction bodies, in combination with platesadapted to press the friction bodies, and levers having bearings in oneplate and adapted to press the other plate, and stops to control saidlevers, substantially as shown and described.

9. In a feed mechanism for metal planers two rotatory plates joined byyielding connections involving springs, and actuating levers for theplates, in combination with trips or stops to turn the levers out ofline against the action of the springs while the plates are turning,whereby the springs tend to reverse the direction of motion of theplates by restoring the levers to their normal position, substantiallyas shown and described.

In witness whereof I have hereunto set my hand, this 24th day of April,1893, in the pres ence of two subscribing witnesses.

WILLIAM GLEASON.

Witnesses:

ENOS B. WHITMORE, M. L. WINSTON.

